Delaware Electricity Suppliers: Delmarva Power Territory Guide (2026)

Delaware is a fully deregulated electricity state, which means most residents can choose who supplies their power even though the wires still belong to the local utility. Almost the entire state sits in a single utility territory — Delmarva Power — which makes Delaware one of the simpler markets to understand once you know how the supply-versus-delivery split works.

This guide covers Delmarva Power’s role, what Standard Offer Service is, how to shop competitive suppliers, and what to watch for before you switch in 2026.

Delmarva Power: Delaware’s Distribution Utility

Delmarva Power, a subsidiary of Exelon, is the regulated electric distribution company for most of Delaware, including Wilmington, Dover, and the bulk of New Castle, Kent, and Sussex counties. Delmarva owns and maintains the poles, wires, meters, and the distribution grid. Regardless of which supplier you choose, Delmarva delivers the electricity, reads your meter, sends your bill, and restores power after outages.

The portion of your bill that goes to Delmarva — the delivery charges — is regulated by the Delaware Public Service Commission and does not change when you switch suppliers. What competition affects is the supply (generation) portion: the actual electricity commodity.

Standard Offer Service vs. Competitive Supply

If you’ve never shopped for a supplier, you’re on Standard Offer Service (SOS), the default supply that Delmarva procures on your behalf through state-regulated competitive bids. SOS rates change periodically (typically each June and at other intervals) and are not designed to make a profit — they pass through Delmarva’s wholesale procurement cost. SOS is a reasonable benchmark, but it can swing with the wholesale market.

The alternative is signing up with a competitive electricity supplier certified by the Delaware PSC. These suppliers compete on price and contract terms. You might lock a fixed rate for 12–24 months to protect against SOS volatility, or choose a green plan backed by renewable energy certificates. The supplier handles the commodity; Delmarva still handles everything else.

The Towns of Newark and the Municipal Exception

A few Delaware communities run their own municipal electric utilities — the city of Newark and the Delaware Municipal Electric Corporation (DEMEC) members like Dover, Milford, New Castle, and Seaford operate municipal systems. If you live in one of these municipal territories, you generally cannot choose a competitive supplier; you buy power from the city utility. Always confirm whether your address is in Delmarva territory or a municipal territory before you start shopping, because it determines whether you have a choice at all.

How to Shop for a Delaware Electricity Supplier

If you’re in Delmarva territory, comparison shopping is straightforward:

• Find your current SOS rate (price to compare) on your Delmarva bill — it’s the per-kWh supply rate. This is the number every competitive offer should beat or match with better terms.
• Compare fixed vs. variable. Fixed-rate plans lock your supply price for the contract term; variable plans can change month to month and sometimes spike after a low introductory period.
• Read the contract terms. Note the term length, the rate after any teaser period, monthly fees, and early termination fees.
• Check the renewal language. Many contracts roll to a month-to-month variable rate at expiration — set a calendar reminder for your end date.

What Switching Does and Doesn’t Change

When you switch suppliers in Delaware, your power doesn’t change, your reliability doesn’t change, and your outage response doesn’t change — those are all still Delmarva. You still get one bill from Delmarva, with the supply line item reflecting your chosen supplier’s rate. If a supplier ever goes out of business or you cancel, you automatically return to Standard Offer Service with no interruption. That safety net makes shopping low-risk as long as you read the contract.

Green Electricity Options in Delaware

If renewable sourcing matters to you, Delaware’s competitive market gives you a path that Standard Offer Service doesn’t emphasize. Several certified suppliers offer 100% renewable plans backed by renewable energy certificates (RECs), letting you match your usage with clean generation for a modest premium. Delaware also has a Renewable Portfolio Standard that requires a growing share of the state’s electricity to come from renewables, plus a solar carve-out, which gradually greens the default supply over time as well. If you install rooftop solar, Delaware still offers net metering through Delmarva, so excess generation credits your bill. For customers who want green power without the capital cost of panels, choosing a renewable competitive plan is the simplest route — just compare the per-kWh premium against the Standard Offer rate so you know exactly what the green choice costs you.

Is Switching Worth It in Delaware?

It depends on the spread between competitive offers and the current SOS rate. When wholesale prices are high, SOS can be expensive and a fixed competitive rate offers protection. When wholesale prices are low, SOS is often hard to beat. The smart move is to know your price to compare, only sign fixed-rate contracts with clear terms, and avoid variable plans with attractive teaser rates that reset higher. Compare current offers against your SOS rate below.

Frequently Asked Questions

Who is the electric utility in Delaware?

Delmarva Power (an Exelon company) is the distribution utility for most of Delaware. A handful of municipalities — Newark, Dover, Milford, and other DEMEC members — run their own municipal electric systems.

Can I choose my electricity supplier in Delaware?

Yes, if you’re in Delmarva Power territory. You can pick a competitive supplier certified by the Delaware Public Service Commission, or stay on Standard Offer Service. Municipal utility customers generally cannot choose.

What is Standard Offer Service in Delaware?

Standard Offer Service (SOS) is the default electricity supply Delmarva procures for customers who haven’t chosen a competitive supplier. It passes through wholesale procurement costs and changes periodically.

Will switching suppliers change who fixes outages?

No. Delmarva Power always owns and maintains the wires and handles outage restoration, regardless of your supplier. Switching only changes the supply (generation) portion of your bill.

What happens if my Delaware supplier goes out of business?

You’re automatically returned to Delmarva’s Standard Offer Service with no interruption in service. The default supply is always there as a backstop.

Is a fixed or variable rate better in Delaware?

Fixed rates protect you from market swings and surprise increases, which is usually the safer choice. Variable plans can start low but reset higher, so read the terms carefully before choosing one.